some questions about Linux audit

some questions about Linux audit

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Dear Sir/Madam,


Hello£¬ I¡®am a Chinese student£¬ now I studying Linux audit and having some problems. I want to collect some information from network£¬such as the accessor¡¯s IP and port. I defined a audit rule in machine A as follow£¬ then I used ¡°ping¡± and ¡°vsftpd¡± programs to test audit. For example, I run "ping A" in another machine, I can't collect any information in A's audit log. In addition, I run "ssh A" , then I get some incomprehensible records that display in the picture below(eg saddr=inet6 host:::1 serv:45983 and saddr=inet6 host:::ffff:127.0.0.1 serv:41573).
  -a always,exit -F arch=b64 -S connect -S getsockname -S getpeername


Looking forward to your reply£¡
Your sincerely,
Yingjie Tang

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Re: some questions about Linux audit

[Steve Grubb]

Hello,

On Thursday, June 8, 2017 9:46:48 PM EDT 358123097 wrote:
> Dear Sir/Madam,
> 
> Hello， I‘am a Chinese student， now I studying Linux audit and having some
> problems. I want to collect some information from network，such as the
> accessor’s IP and port. I defined a audit rule in machine A as follow， then
> I used “ping” and “vsftpd” programs to test audit. For example, I run "ping
> A" in another machine, I can't collect any information in A's audit log. In
> addition, I run "ssh A" , then I get some incomprehensible records that
> display in the picture below(eg saddr=inet6 host:::1 serv:45983 and
> saddr=inet6 host:::ffff:127.0.0.1 serv:41573).
> -a always,exit -F arch=b64 -S connect -S getsockname -S getpeername 

I am not sure of your intent (inbound vs outbound info). If you want to 
collect inbound information, you need to monitor syscalls for inbound events 
such as accept, accept4, recv, recvfrom. Ping uses ICMP packets and is not 
likely to show up in normal syscalls. You might find them by placing audit 
rules in the iptables rules.

-Steve

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